[vicburke]

Declarer (North) is playing a contract in hearts. On the fifth trick, he leads a high club, and East follows suit. Dummy is void in clubs. Declarer calls for the queen of spades to be played. Dummy, apparently not hearing, and assuming that a heart ruff would be called for, plays a heart. Declarer apparently does not notice. West plays a club and everyone turns over their card. North then starts to lead from his hand, and is informed that he is "on the board" with the heart ruff. North states that since he called for a spade, dummy must put the heart from the previous trick back on the board and replace it with the Queen of spades. East disagrees, stating that since the trick was concluded when the cards were turned over, the trick must stand as is.

Who is right?

[gordontd]

Quote

L45D. Card Misplayed by Dummy
If dummy places in the played position a card that declarer did not name, the
card must be withdrawn if attention is drawn to it before each side has
played to the next trick, and a defender may withdraw and return to his
hand a card played after the error but before attention was drawn to it; if
declarer’s RHO changes his play, declarer may withdraw a card he had
subsequently played to that trick. (See Law 16D.)

North is correct, but East may change his card.

[billw55]

gordontd, on 2012-May-25, 13:06, said:

North is correct, but East may change his card.

Do you mean west, who actually played after dummy?

[gordontd]

billw55, on 2012-May-25, 13:27, said:

Do you mean west, who actually played after dummy?

Isn't South always declarer?

[barmar]

gordontd, on 2012-May-25, 14:53, said:

Isn't South always declarer?

Maybe there was also an opening lead out of turn, and declarer chose the option to accept the lead and become dummy.